transcription, транскрипция: [ conjunction ]
Date: 1954
: much less , let alone — used especially in negative contexts to add to one term another denoting something less likely
with this knee I can hardly walk, never mind run
NEVER MIND
Meaning of NEVER MIND in English
Merriam-Webster's Collegiate English vocabulary. Энциклопедический словарь английского языка Merriam Webster. 2003